Thor: Tales of Asgard by Stan Lee & Jack Kirby #1

In "Tales of Asgard," the ancient roots of Asgard unfold beneath the Well of Life, where Ymir, the progenitor of the Frost Giants, rises from the primordial void. From the same source emerges Buri, the first Norse God, whose lineage births Borr and, ultimately, Odin and his brothers Vili and Vé—guardians of Earth, bound to the world tree Yggdrasil as they await the dawn of humanity.

In "The Invasion of Asgard!", Loki breaches Asgard’s defenses, luring Thor into a trap as the realm comes under assault. With the Rime Giants advancing and Ulfrin the Dragon roaring through the skies, Thor must stand alone against the tide—until help arrives from beyond the storm.